Thumbnail Filmstrip of Audi Genuine Flywheel Bolt - N90539801 Images
Description
This part number corresponds to a Clutch Flywheel Bolt (also referred to as a Flywheel Mounting Bolt).
Technical Specifications
Bolt Type: 12-Point Flange Bolt (Spline / Polydrive head)
Thread Size / Dimensions: M10 x 1.0 thread pitch, with a 19mm length (M10-1 x 19mm)
Pre-Applied Threadlocker: Frequently supplied from the factory with a dry, pre-applied locking fluid compound on the threads to prevent loosening from engine vibration.
Torque Nature: These are critical high-torque fasteners.
(For reference on older builds like the G060/VR6 applications, standard installation guidelines typically require a specific initial torque plus a final stretch angle turn, such as 60 Nm + 90°).
Application & Replacement Notes
Quantity Required: Depending on the specific engine and drivetrain configuration (most famously utilized on various Volkswagen 12V VR6, G60, and select Audi longitudinal platforms like the A8 or RS6), a proper full installation typically requires a complete set of 10 bolts.
Single-Use Component: Because these are high-stress fasteners subjected to intense rotational and torque loads, it is highly recommended (and often mandated by factory service manuals) to always replace them with brand new bolts any time the flywheel is removed or upgraded.
Reusing old bolts poses a high risk of failure or shearing, which can lead to severe transmission casing and engine damage.
- Brand: Audi
- No applicable data -
